155884428 has 36 divisors (see below), whose sum is σ = 450333520. Its totient is φ = 44538336.

The previous prime is 155884427. The next prime is 155884429. The reversal of 155884428 is 824488551.

155884428 is a `hidden beast` number, since 1 + 5 + 588 + 44 + 28 = 666.

It is an interprime number because it is at equal distance from previous prime (155884427) and next prime (155884429).

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (155884427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 309043 + ... + 309546.

Almost surely, 2^155884428 is an apocalyptic number.

155884428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

155884428 is an abundant number, since it is smaller than the sum of its proper divisors (294449092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155884428 is a wasteful number, since it uses less digits than its factorization.

155884428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618606 (or 618601 counting only the distinct ones).

The product of its digits is 409600, while the sum is 45.

The square root of 155884428 is about 12485.3685568348. The cubic root of 155884428 is about 538.1882906211.

The spelling of 155884428 in words is "one hundred fifty-five million, eight hundred eighty-four thousand, four hundred twenty-eight".